For in с двумя переменными

# -*- coding: ISO-8859-1 -*-
# rim_arab.py
import re
r_a = dict(I=1, V=5, X=10, L=50, C=100, D=500, M=1000)
q = ["IV", "IX", "XL", "XC", "CD", "CM"]
w = ["IIII", "VIIII", "XXXX", "LXXXX", "CCCC", "DCCCC"]
def rim_arab():
    Rim = input(" Vvedite rimskoe chislo = ")    
    for i, j in q, w:  Rim = re.sub(i, j, Rim)# как исправить эту строку? ...
    Arab = 0
    for k in Rim:  Arab += r_a[k]
    print "   arabskoe chislo Arab = ", Arab
while 0 < 1: rim_arab()

r_a = {'I':1, 'V':5, 'X':10, 'L':50, 'C':100, 'D':500, 'M':1000}
q = ["IV", "IX", "XL", "XC", "CD", "CM"]
w = ["IIII", "VIIII", "XXXX", "LXXXX", "CCCC", "DCCCC"]
 
def rim_arab(Rim):
    for i, j in zip(q, w):  
        Rim = Rim.replace(i, j)
        
    Arab = sum(r_a[k] for k in Rim)
    return Arab
    
while True:
    Rim = input(" Vvedite rimskoe chislo = ")
    print("   arabskoe chislo Arab = ", rim_arab(Rim))

# -*- coding: ISO-8859-1 -*-
# rim_arab.py
r_a = {"I":1, "V":5, "X":10, "L":50, "C":100, "D":500, "M":1000}
q = ["IV", "IX", "XL", "XC", "CD", "CM"]
w = ["IIII", "VIIII", "XXXX", "LXXXX", "CCCC", "DCCCC"]
 
def rim_arab():
    Rim = input(" Vvedite rimskoe chislo = ")    
    for i, j in zip(q, w):  Rim = Rim.replace(i, j)
    Arab = sum(r_a[k] for k in Rim)
    print "   arabskoe chislo Arab = ", Arab
 
while True: rim_arab()